Description: ED is often a physical problem. VIAGRA is a medicine that treats this problem by increasing blood flow where you need it. With VIAGRA, you must be sexually excited to get an erection. If you take VIAGRA and are not sexually stimulated, nothing will happen. You won't get an erection just by taking the pill. VIAGRA is not an aphrodisiac or a hormone. It’s a medicine that treats the physical problem of ED.

Here’s what usually happens when a man is sexually excited:

1. The arteries in the penis relax and widen (this allows more blood to flow into the penis).

2. The increased blood flow causes the penis to become hard and erect.

3. The veins that normally carry blood away from the penis get compressed (this restricts the blood flow out of the penis).

4. More blood begins flowing in and less flows out, making the penis larger; this causes an erection.

For most men, the nerves or blood vessels that play a part in this process work properly. For other men, this may not be true. In these cases, the man may not be able to get an erection. VIAGRA works by increasing blood flow to the penis. This way, when a man is sexually excited, he can get and keep an erection.

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